Sub test()
Dim j, k As Integer
Dim na As String
j = Sheet1.Range("a65535").End(xlUp).Row
k = Worksheets.Count
For i = k + 1 To j + k
Worksheets.Add after:=Worksheets(Sheets.Count)
na = Sheet1.Cells(i - k, 1).Value
Worksheets(i).Name = na
Next i
End Sub